Scientifically speaking, hair does not grow back thicker or faster due to shaving. Our genes regulate how thick our hair is and how fast it grows, and shaving doesn't change our genes! There are a couple of reasons why people THINK that it happens that way, though. One is the fact that hair has a natural taper to it, and when you cut it, the end that is left is thicker and ends more abruptly than the natural taper of the hair left natural. The other reason is, I think, as somone else said, because we start shaving before we are mature, and our hair is naturally getting darker and thicker, independently of the shaving.
I do have to say that waxing definitely has it's good points, though. The area that has been waxed stays smooth much longer, and hair tends to grow back sparser and finer after it has been... well, basically assaulted in that manner, heheh.
And not that there is anything wrong with being gay, but just because you groom your body hair does not mean you are gay, like someone was trying to say. I'm not sure how old you are, so I don't want to say anything too... inappropriate, but if you are old enough to be shaving you are probably old enough to be thinking about girls (or guys, I guess), and let me tell you....if you want certain parts of your anatomy to ... receive attention from someone else, you want those parts to be free of hair, or at least very neatly groomed. If other guys your age aren't thinking about that yet, they will be soon. The seventies bear skin rug look just isn't in fashion anymore. Most young women these days shave completely, their entire bodies. A woman who goes to such trouble is not going to be impressed if you look like a sasquatch. Being male doesn't give you the permission anymore to let yourself go. Women like men who take care of themselves.